1、July 2009DEUTSCHE NORM English price group 8No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 71.100.80!$XlY“1537354www.
2、din.deDDIN EN 13754Products used for treatment of water intended for human consumption BentoniteEnglish version of DIN EN 13754:2009-07Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch BentonitEnglische Fassung DIN EN 13754:2009-07SupersedesDIN EN 13754:2003-07www.beuth.deDocument co
3、mprises pages13DIN EN 13754:2009-07 National foreword This standard has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Wasserwesen (Water Practice Standards Committee), Techn
4、ical Committee NA 119-04-02 AA Wasseraufbereitung. Users of this standard are advised of the reservations stated in the Introduction of the European Standard and should note that national regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (
5、TrinkwV2001) (German Drinking Water Ordinance). Amendments This standard differs from DIN EN 13754:2003-07 as follows: a) Information on purity criteria has been included. b) A NOTE on the classification of dangerous substances has been included. Previous editions DIN EN 13754: 2003-07 National Anne
6、x NA (informative) Bibliography Verordnung zur Novellierung der Trinkwasserverordnung (German Regulation amending the German Drinking Water Regulation), as of 21 May 2001, BGBl. (German Federal Law Gazette) I (2001), No. 24, pp. 959-9801)1)Registered in the DITR database of DIN Software GmbH, obtain
7、able from: Beuth Verlag GmbH, 10772 Berlin. 2 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13754March 2009ICS 71.100.80 Supersedes EN 13754:2003 English VersionProducts used for treatment of water intended for humanconsumption - BentoniteProduits utiliss pour le traitement de leau destine lacon
8、sommation humaine - BentoniteProdukte zur Aufbereitung von Wasser fr denmenschlichen Gebrauch - BentonitThis European Standard was approved by CEN on 1 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStand
9、ard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French,
10、German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech
11、Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE
12、 NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13754:2009: EEN 13754:2009 (E) 2 Contents Foreword 3 1 Scope 5 2 Normative referenc
13、es 5 3 Terms, definitions and symbols . 5 4 Description . 5 4.1 Identification . 5 4.2 Commercial form . 6 5 Physical properties 6 5.1 Appearance 6 5.2 Particle size distribution . 6 5.3 Bulk density packed 6 6 Chemical properties 6 6.1 General 6 6.2 Impurities and main by-products . 6 7 Test method
14、s 7 7.1 Sampling . 7 7.2 Analysis 7 8 Labelling, transportation and storage . 7 8.1 Means of delivery . 7 8.2 Risk and safety labelling according to EU directives . 8 8.3 Transportation regulations and labelling 8 8.4 Marking . 8 8.5 Storage 8 Annex A (informative) General information on bentonite .
15、 9 Bibliography 11 DIN EN 13754:2009-07 EN 13754:2009 (E) 3 Foreword This document (EN 13754:2009) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publica
16、tion of an identical text or by endorsement, at the latest by September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELE
17、C shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13754:2003. Differences between this edition and EN 13754:2003 are editorial to harmonize the text with other standards in this series. Annex A is informative. According to the CEN/CENELEC Inte
18、rnal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Ma
19、lta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 13754:2009-07 EN 13754:2009 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product cove
20、red by this standard: a) this standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning th
21、e use and/or the characteristics of this product remain in force. NOTE Conformity with this standard does not confer or imply acceptance or approval of the product in any of the Member States of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or cont
22、rol by National Authorities. DIN EN 13754:2009-07 EN 13754:2009 (E) 5 1 Scope This European Standard is applicable to bentonite used for treatment of water intended for human consumption. It describes the characteristics of bentonite and specifies the requirements and the corresponding test methods
23、for bentonite. It gives information on its use in water treatment. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docu
24、ment (including any amendments) applies. EN 12485, Chemicals used for treatment of water intended for human consumption- Calcium carbonate, high-calcium lime and half-burnt dolomite - Test methods EN 12901:1999, Products used for treatment of water intended for human consumption - Inorganic supporti
25、ng and filtering materials Definitions EN 12902, Products used for treatment of water intended for human consumption - Inorganic supporting and filtering materials - Methods of test 3 Terms, definitions and symbols For the purposes of this document, the terms, definitions and symbols given in EN 129
26、01:1999 apply. 4 Description 4.1 Identification 4.1.1 Chemical name Not applicable. 4.1.2 Synonym or common names Montmorillonite, Bentonite, Amargosite, Ardmorite, Askanite, Confolensite, Erinite, Galapectite, Malthacite, Samote, Steargilite, Stolpenite, Wilkonite. Montmorillonite and bentonite are
27、 the most commonly used names. 4.1.3 Chemical formula Si4Al2-xM(II)xM(I)x+O10(OH)2. nH2O, where x varies from 0 to 2. The divalent metal M(II) can be replaced completely or partly by monovalent metal M(I) so as to maintain electrical charge equilibrium. 4.1.4 CASRegistry Number 1)1302-78-9. 1) Chemi
28、cal Abstracts Service Registry Number. DIN EN 13754:2009-07 EN 13754:2009 (E) 6 4.1.5 EINECS Reference 2)215-108-5. 4.2 Commercial form The product is available in powder form in many grades differing in purity and monovalent ion (Na+) concentration. 5 Physical properties 5.1 Appearance The product
29、is a white to light brown or green powder. 5.2 Particle size distribution At least a mass fraction of 95 % of the product shall have a particle size less than 500 m. NOTE The particle size distribution is commonly specified as a given mass fraction less than a given particle size. The particle size
30、distribution shall be within the manufacturers declared values. 5.3 Bulk density packed The bulk density packed shall be in the range 800 kg/m3to 1 000 kg/m3. 6 Chemical properties 6.1 General This European Standard specifies the minimum purity requirements for bentonite used for the treatment of wa
31、ter intended for human consumption. Limits are given for impurities commonly present in the product. Depending on the raw material and the manufacturing process, other impurities may be present and, if so, this shall be notified to the user and when necessary to relevant authorities. NOTE Users of t
32、his product should check the national regulations in order to clarify whether it is of appropriate purity for treatment of water intended for human consumption, taking into account raw water quality, contents of other impurities and additives used in the products not stated in the product standard.
33、Limits have been given for impurities where these are likely to be present in significant quantities from the current production process and raw materials. If the production process or raw materials lead to significant quantities of impurities, by-products or additives being present, this shall be n
34、otified to the user. 6.2 Impurities and main by-products The composition of the commercial product shall conform to Table 1. 2) European Inventory of Existing Commercial Chemical Substances. DIN EN 13754:2009-07 EN 13754:2009 (E) 7 Table 1 Composition of commercial product Limit as a mass fraction i
35、n % of the product Parameter Minimum Maximum SiO250 70 Al2O310 20MgO 1 4,5 CaO 0,5 4 Na2O 0,5 3 Mass loss at 105 C 0 15 NOTE 1 When used in treatment to produce drinking water, bentonite should not increase the concentrations of chemical parameters above the regulated values (see 1). NOTE 2 Water ex
36、tractable substances, determined in accordance with the method for powders given in EN 12902, can be used to estimate the leaching of the chemicals specified in EN 12902. 7 Test methods 7.1 Sampling Prepare the laboratory sample(s) required by the relevant procedures described in EN 12902. 7.2 Analy
37、sis 7.2.1 Particle size distribution The particle size distribution shall be determined in accordance with EN 12902. 7.2.2 Bulk density packed The bulk density packed shall be determined in accordance with EN 12902. 7.2.3 Chemical analysis The content of SiO2shall be determined in accordance with EN
38、 12902. The content of Al2O3, CaO, Na2O and MgO shall be determined in accordance with EN 12485. 7.2.4 Mass loss at 105 C The mass loss shall be determined by the method for water content, heating to 105 C, in accordance with EN 12902. 8 Labelling, transportation and storage 8.1 Means of delivery Be
39、ntonite shall be delivered in bags, big bags and bulk. DIN EN 13754:2009-07 EN 13754:2009 (E) 8 In order that the purity of the product is not affected, the means of delivery shall not have been used previously for any different product or it shall have been specially cleaned and prepared before use
40、. 8.2 Risk and safety labelling according to EU directives 3)Bentonite is not listed as a dangerous substance. NOTE Annex I of the Directive 67/548/EEC on Classification, packaging and labelling of dangerous substances and its amendments and adaptations in the European Union contains a list of subst
41、ances classified by the EU. Substances not in this Annex I should be classified on the basis of their intrinsic properties according to the criteria in the Directive by the person responsible for the marketing of the substance. 8.3 Transportation regulations and labelling Bentonite is not classified
42、 as dangerous for transportation by road, rail, sea or air. Bentonite is not listed under a UN number 4). No special labelling is required. 8.4 Marking The marking shall include the following: the name “bentonite“, trade name and grade; the net mass; the name and the address of the supplier and/or m
43、anufacturer; the statement “This product conforms to EN 13754“. 8.5 Storage 8.5.1 Long-term stability The product is stable but hygroscopic. The product can be stored for one or two years if kept dry and away from volatile materials which can adsorb on the bentonite. 8.5.2 Storage incompatibilities
44、Keep away from volatile solvents, odorous products and moisture. 3) See 2. 4) United Nations number. DIN EN 13754:2009-07 EN 13754:2009 (E) 9 Annex A (informative) General information on bentonite A.1 Origin A.1.1 Raw material Bentonite exists in nature as a clay deposit. It is generally contaminate
45、d by sand and rocks. A.1.2 Manufacturing process Bentonite is produced by mining and crushing in the quarry and then treating in a plant where it is crushed to the end use size and dried. By mixing powdered sodium carbonate during crushing it is possible to exchange the divalent metal (generally Ca2
46、+) partly by Na+; this increases the swelling properties of the bentonite. A.2 Physical properties The absolute density is in the range 2 g/cm3to 2,4 g/cm3. A.3 Use A.3.1 Function Bentonite is used to weigh down a flock when there is a low amount of suspended solids in the water. A.3.2 Treatment dos
47、e The treatment dose depends on raw water quality, process plant and treatment objectives and is generally up to 20 mg/l. A.4 Rules for safe handling and use Bentonite is not a hazardous product. It is recommended to avoid exposure to the dust which is irritating to the nose and throat. A.5 Emergenc
48、y procedure A.5.1 First aid. In case of contact with skin, there is no danger - it is recommended to wash with soap and water. In case of contact with eyes, it is recommended to flush with plenty of water. In case of inhalation, it is recommended to move to fresh air. DIN EN 13754:2009-07 EN 13754:2
49、009 (E) 10 A.5.2 Spillage It is recommended to sweep up and to discard in a refuse container. A.5.3 Fire No special requirements apply. DIN EN 13754:2009-07 EN 13754:2009 (E) 11 Bibliography 1 98/83/EC, Council Directive of 3 November 1998 on the quality of water intended for human consumption 2 67/548/EEC, Council Directive of 27th June 1967 on the approximation of the laws, regulations and administrative provisions relating to the classification, packaging and labelling of dangerous substances and its amendments and adaptations DIN EN 13754:2
